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Difficulty: MediumVirtualization Fundamentals

Match each host virtualization component on the left with its corresponding operational characteristic or role on the right.

  • Type 1 HypervisorInstalls directly on physical server hardware without requiring an underlying host operating system.
  • Type 2 HypervisorRuns as a software application on top of a conventional host operating system.
  • Virtual NIC (vNIC)Connects a virtual machine's operating system to the virtual network and assigns a software-based MAC address.
  • Virtual Switch (vSwitch)Provides Layer 2 packet forwarding and VLAN segmentation between virtual machines on the same physical host.

Answer

Type 1 Hypervisor maps to installing directly on physical server hardware without requiring an underlying host operating system. Type 2 Hypervisor maps to running as a software application on top of a conventional host operating system. Virtual NIC maps to connecting a virtual machine's operating system to the virtual network and assigning a software-based MAC address. Virtual Switch maps to providing Layer 2 packet forwarding and VLAN segmentation between virtual machines on the same physical host.
Each component serves a specific layer in host virtualization: Type 1 hypervisors run directly on server hardware; Type 2 hypervisors run on top of an existing host OS; Virtual NICs provide network interface presentation and software MAC addresses to guest VMs; and Virtual Switches perform software-based Layer 2 forwarding and VLAN tagging within the host.

Step-by-Step Solution

1
Differentiate hypervisor architecture layers.
Type 1 hypervisors execute directly on hardware (bare-metal), whereas Type 2 hypervisors execute as an application dependent on an underlying host OS.
Classification depends on whether a primary operating system sits between the physical hardware and the hypervisor execution engine.
2
Identify the virtual network interface abstraction.
The Virtual NIC (vNIC) presents a virtualized Ethernet adapter to the guest OS, maintaining its own software-assigned MAC address.
The guest OS requires a network adapter object to generate layer 2 frames and request network resources.
3
Determine the role of host-internal switching infrastructure.
The Virtual Switch (vSwitch) handles local Layer 2 frame forwarding, MAC learning, and VLAN tagging across virtual ports on the hypervisor host.
Intra-host virtual machine switching is performed in software by the vSwitch without sending local inter-VM traffic out to physical switches unless required.

Key Concept

Host-level server virtualization components and hypervisor architecture models.
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Topics

Virtualization Fundamentals

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